Transient shrinkage behavior of wustite-centered binary/ternary/quaternary/quinary-component oxide packed beds in a reducing atmosphere up to 1773 K
Transient shrinkage behavior of wustite-centered binary/ternary/quaternary/quinary-component oxide packed beds in a reducing atmosphere up to 1773 K
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维氏体中心二元/三元/四元/五元组分氧化物填充床在高达 1773 K 的还原气氛中的瞬态收缩行为
DOI：
10.1016/j.ceramint.2020.01.220
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发表时间：
2020-06
影响因子：
5.2
通讯作者：
Xu Jian
中科院分区：
文献类型：
--
作者：
Deng Junyi;Ma Kaihui;Hu Liwen;Kou Mingyin;Wen Liangying;Xu Jian
以氧化亚铁为中心的多元氧化物在炼铁过程中起着重要的作用，全面了解其高温行为对工业生产过程优化，实现高效、低排放具有重要意义。在这项工作中，FeO为中心的多组分氧化物填充床的瞬态收缩定量测定在还原气氛中高达1773 K，和氧化物之间的相互作用对收缩率（SR）的影响进行了定性评估。结果表明，虽然CaO与FeO的混合增加SR到0.42%/K低于1173 K，进一步混合SiO2或Al 2 O3显着限制这种增强效果，由于形成橄榄石或尖晶石相。然而，在随后的阶段，注入CO后SR增加至高达0.44%/K。FeO和MgO之间的相互作用导致在较低温度下SR大于0.20%/K，但在1173 - 1273 K之间SR从0.33%/K降低到0.16%/K。同时，SiO2的加入减缓了还原反应，SR进一步降低到0.04%/K。另一方面，CaO和Al 2 O3之间的相互作用优先于SiO2和MgO之间的相互作用，并在五组分情况下主导收缩过程，优先形成的CaAl 2 O 4尖晶石相阻碍了Mg 2SiO 4橄榄石相的形成。
Wustite (FeO)-centered multicomponent oxides play an important role in the ironmaking process, and a complete understanding of their high temperature behaviors is of great importance for process optimization to achieve high efficiency and low emissions during industrial production. In this work, the transient shrinkages of FeO-centered multicomponent oxide packed beds are quantitatively determined in a reducing atmosphere up to 1773 K, and the effects of the interactions between the oxides on the shrinkage rate (SR) are qualitatively evaluated. The results show that although mixing CaO with FeO increases the SR to 0.42%/K below 1173 K, further mixing with SiO2or Al2O3significantly limits this enhancement effect due to the formation of an olivine or spinel phase. However, in the subsequent stage, the SR increases to as high as 0.44%/K after CO is injected. The interaction between FeO and MgO leads to an SR of greater than 0.20%/K at lower temperatures, but it causes a decrease in the SR from 0.33%/K to 0.16%/K between 1173 K and 1273 K. Meanwhile, adding SiO2slows the reduction reaction, and the SR correspondingly decreases further to 0.04%/K. On the other hand, the interaction between CaO and Al2O3takes precedence over the interaction between SiO2and MgO and dominates the shrinkage process in the quinary-component case, and the preferentially formed CaAl2O4spinel phase hinders the formation of the Mg2SiO4olivine phase.
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影响因子：
8.7
作者：
A. Potysz;E. V. van Hullebusch;J. Kierczak
通讯作者：
A. Potysz;E. V. van Hullebusch;J. Kierczak
DOI：
10.1007/bf02663391
发表时间：
1994-06
期刊：
Metallurgical and Materials Transactions B
影响因子：
--
作者：
Y. Iguchi;Keisuke Goto;S. Hayashi
通讯作者：
Y. Iguchi;Keisuke Goto;S. Hayashi
DOI：
10.1016/s1006-706x(12)60006-5
发表时间：
2011-12
影响因子：
2.5
作者：
Jintao Gao;Shi-qi Li;Yan-ting Zhang;Yan-ling Zhang;Peiyu Chen;Ping Shen
通讯作者：
Jintao Gao;Shi-qi Li;Yan-ting Zhang;Yan-ling Zhang;Peiyu Chen;Ping Shen
影响因子：
1.8
作者：
T. Matsui;N. Ishiwata;Yoshiaki Hara;K. Takeda
通讯作者：
T. Matsui;N. Ishiwata;Yoshiaki Hara;K. Takeda
DOI：
10.1007/bf02735016
发表时间：
2006-12
期刊：
Metallurgical and Materials Transactions B
影响因子：
--
作者：
Amitabh Shankar;Märten Görnerup-;S. Seetharaman;A. K. Lahiri
通讯作者：
Amitabh Shankar;Märten Görnerup-;S. Seetharaman;A. K. Lahiri